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高海拔750kV变电站防晕金具设计及电场分析
引用本文:杨小库,王仲奕,路自强,张建华,李玉海,刘清培,刘文革,李后顺,徐世山,王生杰.高海拔750kV变电站防晕金具设计及电场分析[J].中国电力,2011,44(11):33-38.
作者姓名:杨小库  王仲奕  路自强  张建华  李玉海  刘清培  刘文革  李后顺  徐世山  王生杰
作者单位:1. 青海电力科学试验研究院,青海西宁,810008
2. 西安交通大学,陕西西安,710049
3. 青海超高压电网建设管理公司,青海西宁,810016
4. 青海送变电工程公司,青海西宁,810001
摘    要:采用有限元仿真计算与紫外成像观测相结合的方法,分析了高海拔官亭750 kV变电站设备连接金具产生明显电晕的位置和起晕原因,主要是螺栓和防晕板的棱角过大、自身防晕能力差以及均压屏蔽环的结构尺寸设置不满足要求,造成局部电场过高。为消除电晕造成的损耗和电磁干扰,掌握高海拔超高压变电站连接金具起晕电场值,对海拔更高的日月山750kV变电站进行了防电晕金具优化设计。通过设置防晕型接线板和连接线夹,优化均压屏蔽环数量和尺寸等措施,有效降低了防电晕金具沿面场强。对优化后的金具进行仿真计算和测试,得到在青海高海拔地区,防晕金具表面场强小于1.5MV/m时,无电晕放电发生。

关 键 词:高海拔变电站  电场强度  有限元计算  紫外成像法

Electrical field analysis and structure design of 750 kV corona-proof fittings in high altitude substation
YANG Xiao-ku,WANG Zhong-yi,LU Zi-qiang,ZHANG Jian-hua,LI Yu-hai,LIU Qing-pei,LIU Wen-ge,LI Hou-shun,XU Shi-shan,WANG Sheng-jie.Electrical field analysis and structure design of 750 kV corona-proof fittings in high altitude substation[J].Electric Power,2011,44(11):33-38.
Authors:YANG Xiao-ku  WANG Zhong-yi  LU Zi-qiang  ZHANG Jian-hua  LI Yu-hai  LIU Qing-pei  LIU Wen-ge  LI Hou-shun  XU Shi-shan  WANG Sheng-jie
Affiliation:YANG Xiao-ku~1,WANG Zhong-yi~2,LU Zi-qiang~1,ZHANG Jian-hua~3,LI Yu-hai~1,LIU Qing-pei~4,LIU Wen-ge~4,LI Hou-shun~1,XU Shi-shan~1,WANG Sheng-jie~1 (1.Qinghai Electrical Power Experimental Research Institute,Xining 810008,China,2.Xi'an Jiaotong University,Xi'an 710049,3.Qinghai EHV Power Grid Construction Management Company,Xining 810016,4.Qinghai Delivery Substation Engineering Company,Xining 810001,China)
Abstract:Finite element analysis(FEA) and ultraviolet imaging detection technique is used to analyze the positions and reasons for corona discharge in Guanting 750 kV substation.The high partial electrical strength is caused by the large angle of bolts and corona-proof boards,low corona-proof capability,wrong size and structure of grading rings.In order to eliminate corona loss and electromagnetic interference,an optimal design of corona-proof fittings in higher altitude 750 kV Riyueshan substation is performed.The ...
Keywords:substation in height altitude  electric field intensity  finite element analysis(FEA )  ultraviolet imaging detection  
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